Work-holder for-lathes



(No Model.)

GQP. BALL-0U. WORK HOLDER FOR LATHES.

PatentedMar. 15, 1 887.

Nrrnn STATES PATENT WORK-HOLDERFOR-LATHES.

srncjrricarrom Application filed June 9. 1886.

i To all whom it may concern:

Be it known that I, GEORGE F. BALLOU, of Waltham, in the county ofMiddlcsex and State of Massachusetts, have invented certain new anduseful Improvements in Work-Holders for Slide-Lathes, of which thefollowing is a full, clear, and exact description.

The work-holder of this invention is more particularly designed andintended for use in slide-lathes of the general construction andarrangement of parts, including the slide-rest and slide-carriage fullyshown and described in a separate application for Letters Patent of theUnited States of even date herewith, filed June 9, 1886, Serial No.204,623; but, as will be obvious from the description hereinafter given,this holder is adaptedt-o be used in slide-lathes and with sliderestsand slide-carriages-o'f other constructions and arrangements of parts.

This invention, in substance, consists, first, of aholder to be used inslide-lathes for holding and securing work to be operated upon in theslidelathe-as, for instance, to be drilled,

milled, &c'.-composed of a frame having two lengths-or armsmeeting at anangle, preferablyaright angle, and-the inner meeting faces of suchlengths each adapted in any suitable manner for the engagement therewithof means suitable to clamp work thereto; second, of a holder to be usedin slidc-lathes for holding and securing work to be operated upon in theslide-lathe-as, for instance, to be drilled, bored, milled,tire-composed ofa frame having two lengths or arms meeting at an angle,

preferably a right angle, and the inner meeting faces of such lengthsand also the ohter face of one of the lengths severally adapted in anysuitable manner for the engagement therewith of means suitable to clampwork thereto; third, of a holder to be used in slide-lathesfor holdingand securing work to be operated upon in the slide-lathe-as,forinstance, to be drilled, bored, milled, &c.-composed of a frame havingtwo lengths or arms meeting at an angle, preferably a right angle, andthe so meeting faces of such lengths each adapted in any suitable mannerfor the engagement therewith of means suitable to clamp work thereto, incombination with a slide-rest of a slide-lathe made in separate parts,or slides constructed and forming part of Letters Patent No. 359,379,dated'March 15,1887.

Serial No.- 204,623. (No modal.)

applied together to be moved and adjusted upon each other in paralleland rectilinear planes and directions, and as a whole adapted to besecured to the lathe bed or shears, and preferably for adjustmentlongitudinally, ver; tieally, and horizontally thereon, and having saidholder attached to one and the upper of its slides to be swung andadjusted thereon in a curvilinear and horizontaldirection,and, soswungand adjusted, fastened against movement. In the drawings forming apart'of thisspecification a work-holder of this invention andv itscombination with the slide-rest and slidecarriage before referred to areillustrated.

Figure 1 is a transverse vertical section of the lathe-bed broken away,and a view in elevation of the work-holder of this invention and of theslide-rest and, slide-carriage from the head-stocn'end of'the lathe, thehead and tail stocks being removed. Fig. 2'is a plan view of the partsas shown in Fig. 1. Fig. 3 is a vertical section on line 3 3, Fig. 1.

In the drawings, A represents the lathe bed or shears of a slide-lathe.The slide-lathe in any and all respects, except as to the features ofthis invention hereinafter described, may be of any of the ordinary andwell-known constructions and arrangements of slide-lathes; but aslide-lathe and a slide-carriage and a slide-rest therefor all suchasshown and described in the application stated are most preferable, andwhich, so far as necessary for this invention, are shown and will beherein described, it not being thought necessary to fully illustrate theother parts thereof, as they in no particular form any part of thepresent invention. f

r M M are the upper andlower leading-screws of the slide-lathe referredto. The upper leading-screw, M, and also the lower leadingrscrew, M",are connected and rotated from the rotation of the lathe-arbor andotherwise, as described in said application. a

The rotation of the leading-screws is for the purpose of moving aslide-carriage lengthwise along the front cheek of the lathe bed orshears, and which carriage is suitably constructed therefor, and theupper leading-screw, M, which is for fine work, connects with horizontalsectional or half screw-nuts D (one only shown,

fork shape,

but two being preferable) of the slide-carriage, and the lowerleading-screw, M which is for general work, connects with theslide-carriage by mechanism consisting, among other parts, of ahand-wheel, (not shown,) and otherwise all as fully described and shownin the application aforesaid,and the whole such as to enable theslide-carriage to be moved lengthwise of the lathe-bed in eitherdirection, and either from the action of-the driving mechanism of thelathe or by the hand-wheel, and also to enable the speed of suchmovement to be varied and adjusted and eitherof the leadingscrews to bebrought into action upon the slide carriage, and all as is fully shownand set forth in the application aforesaid. These several parts andtheir combination and arrangement, as above referred to, form ofthemselves no part of this invention, and so it is not deemed necessaryto herein further describe them.

The slide-carriage is in two parts, to wit: a vertical plate or block,B", with a front fiat face and a back face of angular shape to fit acorresponding angular-shaped gnideway, G, therefor ofthe front cheekofthe lathe-bed,and a bracket with an upright portion, B, arranged tomove vertically in a dovetail way, B of the front face of the block B,and a horizontal arm, B which projects from the upper end of saidupright 13* andat right angles to the length of the slide-carriage, andis made of and preferably with the space between its tines open at thefront end, B.

The bracket 13* B is vertically adjustable on the slide-carriage throughthe turning of a vertical screw-rod, B, engaging with the verticalscrew-nut portion 13 of the bracket and turning loosely within ahorizontal bearingblock, B, of the slide-carriage, and therein confinedagainst lengthwise movement in any suitable manner. This screw-rod B bywhich to adjust the bracket B B" vertically, as above stated, has at itslower end a milled head, B, peripherally and properlygraduated in onehundred equal parts or divisions, each representinga one-thousandth ofan inch, and figured for the rise and fall of the bracket from theturning of said screw to be measured and determined in enethousandthparts of an inch, using a suitable index-mark at the front side of the.bearing-block B" of the screw-rod.

The vertically-adjustable bracket 13 B of slide-carriage supports andcarries a slide-rest in two horizontal parts or slides, O and C, placedupon each other. Slide C-the lower slide ofthe two slides oftheslide-restis made with flaring edges (Z, which fit and set overcorresponding flaring edges of the brackettable B. The direction ofthese flaring edges transversely to the width of the bracket-table B andas shown, is preferably such as to permit slide 0 to be set bodily uponthe brackettable B without requiring it to be slid lengthwise along thesame,and otherwise all arranged for slide (3, with all the otherpartsjconnected with it, to be moved horizontally on the table B forwardto and backward from the axial line of the lathe-arbor. (Not shown.)

C is a screw-bolt projecting downward from slide 0 of slide-rest andbetween the tinesof the forked table B, and C is ascrew or thumb nutscrewing on said bolt and fastening said slide (1 to table B and againstmovement thereon. Slide 0* of the slide-rest fits by a dovetail way inits under side over a corresponding dovetail projection, C, on the upperside of the lower slide, 0, and thus slides G G are adapted for amovement of the upper slide on the lower slide of the two and in ahorizontal plane, and one parallel with and in the direction of thehorizontal slide of the lower slide, 0, on bracket B B. Slide 0 has acircular and vertical edge marked off or graduated in representation ofthe degrees of a circle, Fig. l, and it is provided with a horizontalscrew-rod, 0 whichengages with a screw-nut, O, and by peripheral collarand groove (not shown) is engaged with the bearing-block C, and thusscrew-rod 0", when turned, is confined against lengthwise movementthrough said block.

0" is a milled head of screw 0. This head is peripherally graduated inone hundred equal parts, each, using a suitably-located indeX-mark asaguide, representing inthe movement of the slide operated by thescrew-rod a one-thousandth part of an inch.

H H is the angular frame making the work-holder of this invention. Thisframe is in two lengths or arms, H H", having inner faces, H H,respectively, meeting at'an an gle, preferably a right angle. The lengthor arm H makes the base of the holder, and it sets upon the upper slide,O, of the slide-rest,- and in width it corresponds to the diameter ofthe graduated circular rim or edge of such slide, and it is arranged toswing around a vertical central pintle, 0 f, thereof, and using asuitable index-mark, Fig. -1, of its edge, with the graduations of thecircular edge of slide C. The work-holder can thus be adjusteddefinitely in a curvilinear direction and the work secured thereon, ashereinafter described, plaeed in any angular direction desired inrelation to the rectilinear movements of the-parts of thejslide-rest oneach other, and of the slide-rest as a whole on the slide-carriage,andthe slide-carriage with the slide-rest on the lathe-bed. The base-arm H"of the work-holder frame has a curvilinear running groove, 0", of Tshape in cross-section, and concentric with the axis of swing of theholder around the central pintle, G, of slide-rest, and O are bolts atopposite diamctrical points and engaged by their T-shaped heads withsaid T-shaped groove. These bolts pass loosely through the thickness ofrest-slide C, and on the under side of the slide each bolt receives ascrew-nut, G". Tightening tl-e screw-nuts G fastens the holder to andloosening them releases the holder from slide-rest, leaving it free tobe swung around on the same.

' Each of the inner meeting faces, B B, of

Qthe holder, and also the outer vertical face, E

of the upright leg H of the holder, and which face is parallel with thevertical face H of the meeting faces H H, is provided with a series ofparailel grooves, H each T-shaped in cross-section. The grooves of themeeting faces 11 H are horizontal, and those of the outer= verticalface, Hhare vertical. These [holding faces -ofv the holder, and theworkto several grooved. faces H? H H are the work- I be held placed upon theproper face of the holder is then firmly secured to itwith any suitableclamping means, using a groove or grooves H of the holding face or facesof the holder for engaging such means with and securing themtothe'holder, "One form of and a suitable clamping mechanism is shown, and

\ i't'consists of a horizontal arm, J supported at one end, J, on apost, J, and atthe other end resting upon and confining and clamping thework 0*, This arm or jaw J between its ends, i'sconnectedto thework-holder of "this invention by a vertical screw-threaded bolt,

J7, having its head J entered into a T-shaped -groove H of the upper andinnerface, H,

uponthe screw-bolt and brouglit to a seat ft of the base-arrn 11 of thework-holder and the whole is, then secured and firmlybound to,- getherby means of a screw-nut, J,'screwed againstthe upper edge or sideof-thehorizontal armor jawhJ".

Thepieceof'work 0 sea as clamped to the horizontal face H nt the'holder,as-above exp-raises, obviously could be clamped,.using theclamping'meansdescribed, as wellto'eitheir of thevver'tical faces H H;-

be presentedpractically in I being independent of the others ln'thepractical use ofithe worlr-holder, and withitattached to a slide-restand the sliderest'teaslide-carriage, and. itj' in turn to thelathe-j:bed, all-substantially asf'has been described, lainly'worksecured to the holder as described, or in any other suitable way, can

zontal directions and angles, eachpresenta tion' -"Ihe workholder hereindescribedis most particularly applicable to the slide-lathe, sliderest,

and slide'carriage herein referred to; but

it is not intended to be limited thereto.

' work, composed of Again, the work-holder of this invention is mostserviceable as a means of holding work for being drilled, bored, milled,and otherwise operated upon in a slide-lathe, and it is mostparticularly adaptedfor use with the vertical drilling fixture makingthe subject of separate applications for Letters Patent of the UnitedStates of even date herewith.

- Having thus described'my invention, what I claim, and desire to secureby Letters Patent, 1s-- 1 work, composed of a frame in two lengthsmeeting at an angle,' and the meeting faces of each length constructedto receive and fasten means for clamping work thereto, and for a-tiallyras described, for the purpose specified.

work, composed of a frame in two lengths meeting at an angle, and themeeting faces of eachlength constructed to receive and fasten means forclamping work thereto, and of slides in' separate parts constructed andapplied together to be moved and adjusted one upon the other in paralleland rectilinear planes. and directions, and having said frame connectedthereto and arranged to swing thereon, substantiallyas ed. g 3'. Aholder for use in a slidelathe to hold a frame in two lengths, H H,havingfaoes H H, meeting at'an angle,

anytandall' hip'rireceiving and seen r ng work-clampin g devices,"substantially as described, for the purpose specified.

' FRANCE-S M. BRowN.

rectilinear adjustment of such means, substan and each face providedwith grooves Hfor 1. A holder for use in a slide-lathe 'to hold 2.Acholder for use in a slide-lathe to hold described, for the purposespeci- 4: A'holder for use in a slide-lathe. to hold I

